EP4197859A1 - Optique primaire avec guides de lumiere pour phare de motocyclette - Google Patents

Optique primaire avec guides de lumiere pour phare de motocyclette Download PDF

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Publication number
EP4197859A1
EP4197859A1 EP21215517.0A EP21215517A EP4197859A1 EP 4197859 A1 EP4197859 A1 EP 4197859A1 EP 21215517 A EP21215517 A EP 21215517A EP 4197859 A1 EP4197859 A1 EP 4197859A1
Authority
EP
European Patent Office
Prior art keywords
light
primary optics
line
extension
guiding elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21215517.0A
Other languages
German (de)
English (en)
Inventor
Matej Martiska
Anton KOKOSKA
Jaroslav Kyselica
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZKW Group GmbH
Original Assignee
ZKW Group GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZKW Group GmbH filed Critical ZKW Group GmbH
Priority to EP21215517.0A priority Critical patent/EP4197859A1/fr
Priority to JP2022194105A priority patent/JP2023090665A/ja
Priority to KR1020220168353A priority patent/KR20230092749A/ko
Priority to US18/082,753 priority patent/US11719403B2/en
Priority to CN202211619821.4A priority patent/CN116265808A/zh
Publication of EP4197859A1 publication Critical patent/EP4197859A1/fr
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
    • B60Q1/08—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically
    • B60Q1/12—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to steering position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J6/00—Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
    • B62J6/02—Headlights
    • B62J6/022—Headlights specially adapted for motorcycles or the like
    • B62J6/026—Headlights specially adapted for motorcycles or the like characterised by the structure, e.g. casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/20—Illuminance distribution within the emitted light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
    • F21W2107/13—Use or application of lighting devices on or in particular types of vehicles for land vehicles for cycles
    • F21W2107/17—Use or application of lighting devices on or in particular types of vehicles for land vehicles for cycles for motorcycles

Definitions

  • the invention relates to a primary optics for a motorcycle headlamp, the primary optics is a non-imaging primary optics configured to irradiate a segmented light distribution in front of the primary optics, wherein the primary optics comprises:
  • the invention also relates to an illumination device comprising a primary optics according to the invention, a plurality of light sources, at least one light source being associated with a respective light input surface of a light guide element, and a projection lens system, which is configured to receive the light emitted from the common light output surface of the primary optics and to project the segmented light distribution in front of the illuminating device.
  • the invention also relates to a motorcycle headlamp comprising at least one illumination device according to the invention or at least one primary optics according to the invention.
  • document AT 513341 A1 discloses an illumination device for radiation of a segmented light pattern. This illumination device is designed for use in cars. Contrary to motorcycles, vehicle headlamp for car is usually less constrained by size requirements and do not need to have any adaptions for lateral inclinations of a car. Usually, the lateral inclinations of cars are minor.
  • each segment covers a wider spatial angle. Having a wider spatial angle for a given segments leads to problems regarding visible differences of the light intensity in the light pattern. In detail, darker vertical gaps can be seen in areas wherein segments are adjacent to each other.
  • the common light output surface comprises a homogenization structure configured to homogenize the light distribution of light segments irradiated along the straight irradiation line, wherein the homogenization structure is formed of a plurality of grooves, each of which extends along an extension line transverse to the straight arrangement line of each group of light guiding elements, wherein the groove having a constant radius in a cross-section orthogonal to the extension line along the extension line, and wherein the grooves being arranged with respect to each other in such a way that the extension lines of the grooves are parallel to each other.
  • a motorcycle is typically a two-wheeled single-track motor vehicle, but generally speaking a two-wheeled or three-wheeled motor vehicle that is designed to incline/bank along its longitudinal axis when cornering. Possible bank angles of 45° are common.
  • Each light guide element of the primary optics is assigned to a specific segment of the light distribution pattern that can be irradiated by the primary optics or an illumination device with the primary optics, wherein neighboring light guide elements are assigned to neighboring segments in the light distribution.
  • each row or group of the light guide elements of the primary optics including the light sources assigned to these rows or groups of rows can be activated and deactivated independently of each other, wherein the primary optics or illumination device with the primary optics is configured to be controlled based on a measured bank angle of the motorcycle, wherein the rows are tilted with regard to another and activation and deactivation of the rows or groups is performed based on the measured bank angle of the motorcycle, in particular in order to add additional light irradiation into an area of a low beam distribution.
  • This allows for a maximum resolution of the illumination device while optimizing the behavior of the illumination device when cornering, thus avoiding glaring while maintaining optimal road illumination.
  • the low beam module can be supported by the high beam module by selective activation of segments, in particular rows of the illumination device. A larger number of rows improves the adaptation of the dipped headlamp's light pattern when cornering.
  • the primary optics or the illumination device with the primary optics is configured to enable the irradiation of a high beam light distribution.
  • a high beam light distribution can be radiated.
  • the "homogenization structure" according to the invention is in particular useful: In contrast to sharp borders of a segmented high-beam light distribution, here the light segments of the singe light guide elements will smoothly overlap from the center to periphery along a radial direction. When cornering, a homogeneous low-beam distribution is generated, and the cut-off line is aligned with the horizon at different bank angles.
  • the extension lines are linear axes.
  • the extension lines at least partially have a curvature in the direction of the main direction.
  • the curvature follows the Petzval surface of the projection lens system.
  • each groove having the same radius.
  • the radius is between 0,1 mm and 0,5 mm, preferably between 0,175 mm and 0,5 mm, preferably 0,35 mm.
  • each groove following a half circle in a cross-section orthogonal to the extension line along the extension line is orthogonal to the extension line along the extension line.
  • the primary optics is made of silicon.
  • the primary optics is made of transparent polycarbonate material.
  • the primary optics is created as a single pieced component by way of molding, in particular injection molding.
  • an illumination device comprising a primary optics according to the invention, a plurality of light sources, at least one light source being associated with a respective light input surface of a light guide element, and a projection lens system, which is configured to receive the light emitted from the common light output surface of the primary optics and to project the segmented light distribution in front of the illuminating device.
  • the projection lens system comprising at least one projections lens, preferably exactly one projection lens.
  • the projection lens system has an optical axis and a Petzval area, wherein the primary optics and the projection lens system are arranged to each other in such a way that the common light output surface of the primary optics is positioned in the Petzval area of the projection lens system.
  • the projection lens system comprises an achromatic doublet for reducing chromatic aberrations.
  • the primary optics and the projection lens system are coaxially arranged with the main beam direction of the illumination device.
  • each extension line lies in an extension plane, wherein the grooves of the homogenization structure are arranged in a way, that the extension plane of each groove is parallel to each other.
  • the extension planes are parallel to the vertical mirror plane. Because of this straight orientation of the grooves, the homogeneity of the segmented rows or groups is positively affected due to overlapping effects in horizontal orientation in addition to the overlapping along the straight irradiation line in radial direction.
  • the extension planes are vertical seen in a correct installed state of the primary optics in a motorcycle, wherein the motorcycle is in an upright position.
  • the object of the invention is also be achieved by a motorcycle headlamp comprising at least one illumination device according to the invention or at least one primary optics according to the invention.
  • a motorcycle headlamp comprising at least one illumination device according to the invention or at least one primary optics according to the invention.
  • the illumination device 10 shown in the figures is configured to irradiate or project a high beam light distribution, but the illumination device 10 may also comprise an additional low beam module for irradiating or projecting a low beam light distribution.
  • Each light guiding element 200 has a light input surface 210 , into which light of the light sources 50 can be coupled into the light guiding element 200 , and a common light output surface 220 for irradiating light received by the light guide elements 200, wherein each light guiding element 200 is configured to contribute in generating of a respective light segment of the segmented light distribution, as can be seen in more detail in Fig. 2 and Fig. 3 .
  • the primary optics 100 is made of silicon but can also be made of transparent polycarbonate material (PC), wherein the primary optics 100 is created as a single pieced component by way of molding, in particular injection molding.
  • PC transparent polycarbonate material
  • the illumination device 10 comprises a plurality of light sources 50, at least one light source 50 being associated with a respective light input surface 210 of a light guide element 200, and a projection lens system 400, which is configured to receive the light emitted from the common light output surface 220 of the primary optics 100 and to project a segmented light distribution LD1 in front of the illuminating device 10.
  • the light guiding elements 200 are arranged in groups GP1, GP2, GP3, wherein the groups are mirrored along a vertical plane VP, as can be seen in Fig. 2 , wherein the vertical plane VP is parallel to the main direction X.
  • Groups GP1', GP2', GP3' in Fig. 2 are the mirrored groups of groups GP1, GP2, GP3 .
  • Each group GP1, GP2, GP3 comprises in the embodiment in the figure, three light guiding elements 200 arranged in juxtaposition along a straight arrangement line AL1 , AL2, AL3 orthogonal to the main direction X (the same applies for the mirrored groups GP1', GP2', GP3' ), wherein the light segments generated by the light guiding elements 200 of a group are irradiated in juxtaposition along a straight irradiation line IL corresponding to and parallel to respective straight arrangement line of the respective group.
  • Fig. 7A and Fig. 7B shows a generated segmented light distribution LD1, wherein the light segments LS1, LS2, LS3 are generated by the light guiding elements of a first mirrored group GP1' .
  • the common light output surface 220 comprises a homogenization structure 300 configured to homogenize the light distribution LD1 of light segments LS1, LS2, LS3 irradiated along the straight irradiation line IL , wherein the homogenization structure 300 is formed of a plurality of grooves 310 , each of which extends along an extension line EL transverse to the straight arrangement line AL1, AL2, AL3 of each group GP1, GP2, GP3 of light guiding elements 200 , wherein the groove 310 having a constant radius R in a cross-section orthogonal to the extension line EL along the extension line EL , and wherein the grooves 310 being arranged with respect to each other in such a way that the extension lines EL of the grooves 310 are parallel to each other.
  • Each groove 310 having the same radius R, wherein the radius R is between 0,1 mm and 0,5 mm, preferably between 0,175 mm and 0,5 mm, preferably 0,35 mm.
  • each extension line EL lies in an extension plane EP, wherein the grooves 310 of the homogenization structure 300 are arranged in a way, that the extension plane EP of each groove is parallel to each other. Moreover, each extension plane EP is parallel to the vertical plane VP.
  • Fig. 7A shows a generated segmented light distribution with a homogenization structure 300
  • Fig. 7B shows a generated segmented light distribution without a homogenization structure 300.
  • FIG. 4 which shows a top view of the primary optics 100 and a schematic illustrated segmented light distribution with light segments LS1', LS2', LS3', between adjacent light segments LS1', LS2', LS3' are indicated light distribution gaps LDG (also be seen in Fig. 7B as gaps LDG ) .
  • These light distribution gaps LDG are irradiated with light due to the homogenization structure 300, so that light distribution of light segments LS1', LS2', LS3' are homogenized along the straight irradiation line IL.
  • the shown light distribution LD1' refers to an intermediate image generated by first mirrored group GP1' at the common light output surface 220 of the primary optics 100.
  • the grooves 310 of the homogenization structure 300 are parallel to each other, wherein the extension lines EL are linear axes.
  • extension lines EL have at least partially a curvature in the direction of the main direction X, as indicated in Fig. 6 . It is also possible that each groove 310 following a half circle in a cross-section orthogonal to the extension line EL along the extension line EL, also indicated in Fig. 6 .
  • the common light output surface 220 following substantially a virtual curved surface, which curved surface can follow the Petzval surface of the projection lens system 400.
  • the grooves 310 and their respective extension lines EL follow the virtual curved surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP21215517.0A 2021-12-17 2021-12-17 Optique primaire avec guides de lumiere pour phare de motocyclette Pending EP4197859A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP21215517.0A EP4197859A1 (fr) 2021-12-17 2021-12-17 Optique primaire avec guides de lumiere pour phare de motocyclette
JP2022194105A JP2023090665A (ja) 2021-12-17 2022-12-05 モータサイクル前照灯用一次光源
KR1020220168353A KR20230092749A (ko) 2021-12-17 2022-12-06 모터사이클 헤드램프용 일차적 광학장치
US18/082,753 US11719403B2 (en) 2021-12-17 2022-12-16 Primary optics for motorcycle headlamp
CN202211619821.4A CN116265808A (zh) 2021-12-17 2022-12-16 摩托车前照灯的主要光学元件

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21215517.0A EP4197859A1 (fr) 2021-12-17 2021-12-17 Optique primaire avec guides de lumiere pour phare de motocyclette

Publications (1)

Publication Number Publication Date
EP4197859A1 true EP4197859A1 (fr) 2023-06-21

Family

ID=78957138

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21215517.0A Pending EP4197859A1 (fr) 2021-12-17 2021-12-17 Optique primaire avec guides de lumiere pour phare de motocyclette

Country Status (5)

Country Link
US (1) US11719403B2 (fr)
EP (1) EP4197859A1 (fr)
JP (1) JP2023090665A (fr)
KR (1) KR20230092749A (fr)
CN (1) CN116265808A (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006007450A1 (de) * 2006-02-17 2007-08-23 Automotive Lighting Reutlingen Gmbh Beleuchtungseinrichtung
AT513341A1 (de) 2012-09-03 2014-03-15 Zizala Lichtsysteme Gmbh Leuchteinheit für einen Scheinwerfer
WO2017106891A1 (fr) * 2015-12-21 2017-06-29 Zkw Group Gmbh Phare pour véhicule
WO2017185118A1 (fr) * 2016-04-29 2017-11-02 Zkw Group Gmbh Unité d'éclairage destinée à un phare de véhicule automobile pour générer un faisceau de lumière à coupure clair-obscur
DE102018209061A1 (de) * 2018-06-07 2019-12-12 Osram Gmbh Optische anordnung für ein fahrzeug, scheinwerfer, fahrzeug und verfahren für die optische anordnung
DE102020202923A1 (de) * 2020-03-06 2021-09-09 Osram Gmbh Optisches Element für eine Leuchte und Leuchte mit einem solchen optischen Element

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3076887B1 (fr) * 2018-01-12 2021-10-15 Valeo Vision Module optique pour vehicule automobile

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006007450A1 (de) * 2006-02-17 2007-08-23 Automotive Lighting Reutlingen Gmbh Beleuchtungseinrichtung
AT513341A1 (de) 2012-09-03 2014-03-15 Zizala Lichtsysteme Gmbh Leuchteinheit für einen Scheinwerfer
WO2017106891A1 (fr) * 2015-12-21 2017-06-29 Zkw Group Gmbh Phare pour véhicule
WO2017185118A1 (fr) * 2016-04-29 2017-11-02 Zkw Group Gmbh Unité d'éclairage destinée à un phare de véhicule automobile pour générer un faisceau de lumière à coupure clair-obscur
DE102018209061A1 (de) * 2018-06-07 2019-12-12 Osram Gmbh Optische anordnung für ein fahrzeug, scheinwerfer, fahrzeug und verfahren für die optische anordnung
DE102020202923A1 (de) * 2020-03-06 2021-09-09 Osram Gmbh Optisches Element für eine Leuchte und Leuchte mit einem solchen optischen Element

Also Published As

Publication number Publication date
CN116265808A (zh) 2023-06-20
KR20230092749A (ko) 2023-06-26
US20230194063A1 (en) 2023-06-22
US11719403B2 (en) 2023-08-08
JP2023090665A (ja) 2023-06-29

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